Viper Room 21st Anniversary All-Star jam feat: Billy Idol, Steve Stevens, Steve Vai and included a Sebastian Bach tantrum   Joe Dolan PR — It happens here in Hollywood and like no other venue in town, the all-star birthday jams bring out plenty of surprises. The Viper is officially 21 and we were happy to share the evening with all the talent … including Steve Vai … what? Jeff Scott Soto …say what? Sebastian Bach having a[…]